According to the Guidelines for the Development, Recognition and Usage of Skill Standards, recognized skill standards are required to be reviewed and updated as necessary to ensure continued currency and relevance. Skill standards may be amended at any time when the occupational skills, knowledge, and conditions (tools, resources and equipment) necessary to carry out key activities and their related performance criteria change but not the actual work performed. When the actual work has changed, a new development process is required to determine the broad work responsibilities, key activities, and performance criteria that describe the occupation. Thus, the review verifies that the content of the skill standards—made up of several elements—is still valid in today’s working environment. Industry representatives participate in the review to ensure that the contents of the standards represent the skills needed of entry-level technicians in the field.